Welcome to Squeak - a free, open Smalltalk system.
Squeak 4.0 is the pinnacle of several years of relicensing work. Though this version is functionally equivalent to Squeak 3.10.2, it is the first version of Squeak to be licensed fully under FOSS terms. Squeak 4.0 is licensed under MIT, with some original Apple parts remaining under the Apache 2.0 license.

The licensing effort was a major task. We'd like to acknowledge the following individuals and organizations for their support, and for their tireless work: